Improvement in tinmen s furnaces



L. F. BETTS.

TINMENS FURNACE.

No.169,6 73. PM Patented Nov. 9, 1875.

FIG-III.

WITNESSES 11v VEJVTOR Q B wrs WW y 49 MW NVFETERS. PHOTO LITHOGRAFHEIL WA5HINGTON, 0 C.

UNITED STATES PATENT OFFICE.

LEWIS F. BETTS, or CHICAGO, ILLINOIS.

IMPROVEMENT IN TINM ENS FURNACES.

Specification forming part of Letters Patent No. 169,673, dated November 9, 1875; application filed September 28, 1875.

To all whom it may concern:

Be it known that I, LEWIS F. BETTS, of Chicago, Illinois, have invented a Tinmans Furnace, of which the following is a specification:

This invention relates to furnaces for heating soldering-irons; and it consists in providing a tinmans furnace with a magazine and hollow or tubular bars upon which the fuel may rest, said bars forming receptacles or ovens within which the soldering-irons may be heated, and a downward draft through that portion of the fuel which is below the collar, b, to securea funnel-pipe, which maybe connected with some adjacent chimney, if convenient or desired. At the top of the furnaceA tliereis a cylinder, 0, with a tight-fittin g cover. The cylinderO is the magazine, and may be filled with fuel. The furnace A extends front and back of the magazine, so that a space will exist between the top of the furnace and the fuel, as the latter falls down in a conical pile upon the grate, and in the front opposite this space the draft-inlets a. a are located, so that the draft is. admitted above the fuel on the grate, passes downward through the same, and escapes under the curtains d, through the side flues D, and into the rear flue B. A slide, 0, or some othersuitable device, controls the draft, orshuts it off altogether, if desired. The fuel rests mainly upon'thetwo tubes FF, which are closed at their rear ends and open-through the front of the furnace. The tubes are of sufficient internal diameter to receive the soldering-irons. They'may berotated from time, to expose the furnace uniformly to the effects of the flame, and thereby increase their durability. Between the tubes F Fthere is a flat bar, Gr, also pivoted at its frontand rear ends, and provided With a crank or handle, g, by

sides they will be exposed to the heat, instead of encountering the cold airon one side, as would be the case if the draft were from the bottom upward.

Having described my invention, what I claim as new is l. A tinmans furnace, provided with a fuelmagazine, and with draft-inlets at .or near its base, but above the fuel on the grate, and a si'noke-outlet below the grate to produce a downward draft through the fuel, combined with open-end tubes to receive the solderingirons and heat the same without contact with the burning fuel.

2. A tinmans furnace, A, provided with the tubes or ovens F to receive the soldering-irons, located at the bottom to support the fuel, combined with air-inlets at the top, and escapeflues D below said tubes and at the sides, substantial] y as described, so that the flame passes around the exposed surfaces of said ovens, and heats them uniformly, as set forth.

3. A tinnians furnace, A, provided with the tubes or ovens F, at the bottom of the fuel, to support the same, combined with the shaking-plate G, between said tubes, as set forth.

4. The cylindrical tube or oven 15, constructed with a flange extending laterally around its open end, and an axial stud at its closed end, substantially as specified, so that it may 'be readily inserted or removed, securely held in place, and rotated as often as may be required to expose fresh surfaces to the action of the burning fuel.

LEWIS F. BETTS. Attest:

H. P. STEWART, J. T. LEoKLIDER. 

